Lens-mounting.



Gi LOWENSTEIN. LENS MOUNTING. APPLICATION EILBD A1=.11, 1908..

914,149. Patented Mar. 2, 1909.

q/acm #W Q By ATTORNEYS Unrrnn srnrns PATENT onnion.

GUTHARD LOWENSTEIN, OF NEW YORK, N. Y.

Lans-Monsun@ Specification of Letters Patent.

Patented Maren 2, 190e..

Application inea april 11', 190s. seria: No. 426,463.

my more particular purpose being 'to produce a lens so readily detachable from the'framework which normally supports it and so readilyT attachable to the same, that any personV can instantly removethe lens from the frame ,or replace it,theoonstruction,however, being such that when the lens is up'on the frame it is perfectly rigid and free from lost motion. M.Ieiereiice is to be had to the accompanying' drawings forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the iigures. 4, 'Figurel is a slightly enlarged front elevation showing a pair of eyeglasses equipped with my improved lens mounting; Fig. 2 1s a fragmentary elevation still further enlarged, showing the manner in which the Ispring latch and its accompan ing partsare used for the purpose of hol iugm positionthe metallicv head always carried by the lens.; Fig. 3 is a substantially central fragmentary section upon. the line 3-3 of Fig. 2, looking in the direction ofthe arrows, this view showing how the metallic head carried by the lens is hooked-into the eye of the stud and is secured by the spring latch; and Fig. 4 is a view somewhat similar to Fig. 3, but showing the lens and the metallichead carried by it as being placed in position -upon the stud.

As t e mountings for the lenses are alike, it will sufce. to describe but one of them.l A stud Slis mounted upon a spring and is provided with a spring latch 'Isecured to the stud b the ai of a bolt 8; A stirrup 7 E partial y encirclesthellatch 7 and forms a uniting sto for preventing excessive movement o the atter, ad will be understood from Figs. 3 and 4. A supporting rod 9 carries a guard 10 for supporting the eyeglasses upon the nose of the wearer in the-usual manner. A screw 11 secures together the s ring 6V and the supporting rod 9. The stud vided with opp integral with 1t and each having a general arcuate form. The stud 5 is also provided with a slot 13, and extending across this slot is a bridge 14 integral with the stud 5. The

a 5 is `pro` osltely extendmg portions 12 stud is further provided with lugs '15 extending out iiush with the' outer' surface ofthe spring latch 7 and secured rigidly agaimt the same by peening or hammering, so a's to hold hr latch 7 firmly in position by aid of the' The sf ring latch 7 is provided with a slot 16. A ens is shown at 17- and is provided with a metallic head 18 secured rigidly toit by aid of a screw bolt 19. Intermediate the bridge 14 and the stu-d 5 the slot 13v has a recess 20, andthe head 18 is provided with a lug 21 formed into' a hook and adapted to? extend into said recess 20. The slot 13 of the stud 5'is also so shaped as to forman undercut 22, as wil-l be understood fro-n1 Figi 4. `The head 18 is provided with a spur 23 which is adapted to slip into the undercut4 22 so as to .hed the head rigidly in positi'en.

The head is provided w ith a hook 2"4 which is f ada ted toTass into the slot 16 of the s v)rin-g .late 7.

e outer or free end 25 o this spring latchv is curved slightly, as indicated in Fig. 4.

My invention is used as follows: The operator (whounay be any person using eyeglasses) ordinarily wears the glasses without doing anything to them. Ifhowe'ver, he

desires, for any reason, to remove the lens, he

grasps it between his fingers and at the same time places his thumb nail against the inside of the s ring latch 7 at the end 25 of the same. By app ying a gentle 'ressure'against this end 25 hebends the spring atch slightly away from the stud 5 so that the slot 16 clears the hook 24. This releases the head 18 and the lens can nowbe removed by turning it outwardlyat the .bottom into the position indicated in Fig. 4, the hook '21 simply being next lowered. This all takes place at one o eration and so easily that it can be done Wit out the necessity for any special knowledge or training for the purpose.

In order to replace the lens the hook 21 is slip ed into the recess 20 so as to engage the bri ge 14, and the lens 17 is next forced down so that its central plane coincides substantially with the central plane of the stud 5. The spring latch 7 now clasps into place, the slot 16 encircling the hook 24 and the spur 23 extending into the undercut 22, thereby forming a firm anchorage.

I am aware that the broad idea of a-detachable lens is not new, but my particular construction affords special advantages not t heretofore attained.

described, as reasonable changes can be made `Without departing from the spirit of my invention..

Having t claim as new -Patent: A

fl. The combination of a frame to be worn upon the face, a stud mounted upon said frame and provided with a slot, a lens, a head us described my i invention, I and desire to secure by`Letters vmounted upon said lens and provided with a Aortion for'entering said slot, and a spring atch for temporarily connecting said stud and said headl together.

2'. The combination of a frame to be Worn upon the face, a stud mounted uponsaid frame and provided with a slot extending entirely throughsaid stud, the stud being further` providedwith a bridge` of said slot, a lens, lensand provided With a hook for engaging said bridge, said headbeing further irovided with asecond hook, and a spring atch for temporarily securing together said last-mentioned hook and saidstud. l t 4. A' device of the character described, comprising a frame to be Worn upon the face, a stud mounted upon said frame and provided With abridge, saidstud being further rovided with :an undercut portion, a spring ahead secured' to said atch mounted upbn said stud and extending f past said undercut portion, ,said spring latch bounding a portion 'l being dprovided. with an opening, and a head rovi ed withv ay portion for engaging said ridge, and further provided with a spur for y extending into said undercut, said head being also provided With a hook for extending through said :openin in said spring latch, and a lens connected wit sai head. V 4. The combination of a frame to be Worn upon-the face, 'a stud mounted lupon said frame, a lens to be supported by said stud, a metallic member y sec-ured to said lens and provided with portions extending alittle dis# tance along the edges thereof for the purpose of holdin said lens, aspring latch, -and means controlla le .by said spring latch for tempolrarily connecting saidvmetallicmember with -said stud.

5. The combination-with a frame to bev Worn upon the face, of a stud mounted upon said frame, a lens to befsupported by said stud, a metallic member secured to said lens and movable relatively to said stud, a latch for connecting said metallic member and said.

stud togethen; and a limiting stop for reventing excessive movement of said latc In testimony-Wh name to this specification in the presence Iof two subscribing witnesses.

GOTHARD .LOWENSTEN Witnesses:

WALTON HARRISON, JOHN P. Davisy ereof I have signed myv 

